Perhaps the best of all: After thirty failed takes on "Mamma mia, that's a spicy meatball!" they finally get a perfect one, and the oven door falls off in the background. At which point, you hear the director offscreen say, "Okay, lets break for lunch..." !! The executives decided that the public was too busy laughing at the ads to run right out and buy the product and they discontinued them fairly quickly.
And all those hilarious fake commercials from the early (mid-70s) Saturday Night Live broadcasts. Quarry breakfast cereal ("It isn't grown, it's mined!"). Shimmer- it's a floor wax and a dessert topping ("Great taste. And just look at that shine!"). And of course the Super Bass-O-Matic '76. All now showing on YouTube.
I love that Darth Vader commercial too. There was a squel attached to the next year's "dog" commercial; they called it The Dog Strikes Back... http://www.youtube.com/watch?v=0-9EY...id=P-nuKjVnFrY
The Geico commercials are fun at first, but they run so often that I get tired of them pretty fast. I like a few of those deliberately over-the-top Heineken commercials, which run a bit more sparingly. The wild club scenes where not everyone is beautiful- or a great dancer. http://www.youtube.com/watch?v=pyiBg1TmZ3w
Heineken had a fun one called "The Joke" too. https://www.youtube.com/watch?v=4msp9koKLrk
Sometimes it's the music that gets me. Years ago I discovered one of my favorite bands, Ivy, after calling a cruise line to ask who did the music behind their commercial. "At the edge of the ocean, we can start over again..." The woman on the phone said they were getting thousands of calls. Can't fine the ad anymore, but I should post a link to the song on Brigid's music thread when I think of it. About two years ago I heard the first of the Friskies "Feed the senses" ads, where the kitty jumps through a magic door into an animated world of wonders and adventure, and it was the same type of thing. I could still sing the whole little jingle to myself right now. And in fact it I'm pretty sure that first one was the same gal, the singer from Ivy. She truly has a magical voice. http://www.youtube.com/watch?v=RlHQC1MG5Lc
Some of the Berlitz "Learn English" commercials on European TV were pretty funny.
There was one that featured a Dutch family with the parents cluelessly nodding along with the car radio, having no idea the words are totally obscene. I won't post a link to that one here.
I think I may have posted this link before. Not a commercial, but a good chuckle nonetheless.
Opas IPad - YouTube